{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-45846",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-45846"
  ],
  "published": "2026-05-27T09:24:19Z",
  "summary": "bareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbareudp: fix NULL pointer dereference in bareudp_fill_metadata_dst()\n\nbareudp_fill_metadata_dst() passes bareudp->sock to\nudp_tunnel6_dst_lookup() in the IPv6 path without a NULL check.\nThe socket is only created in bareudp_open() and NULLed in\nbareudp_stop(), so calling this function while the device is down\ntriggers a NULL dereference via sock->sk.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000018\n RIP: 0010:udp_tunnel6_dst_lookup (net/ipv6/ip6_udp_tunnel.c:160)\n Call Trace:\n  <TASK>\n  bareudp_fill_metadata_dst (drivers/net/bareudp.c:532)\n  do_execute_actions (net/openvswitch/actions.c:901)\n  ovs_execute_actions (net/openvswitch/actions.c:1589)\n  ovs_packet_cmd_execute (net/openvswitch/datapath.c:700)\n  genl_family_rcv_msg_doit (net/netlink/genetlink.c:1114)\n  genl_rcv_msg (net/netlink/genetlink.c:1209)\n  netlink_rcv_skb (net/netlink/af_netlink.c:2550)\n  </TASK>\n\nAdd a NULL check returning -ESHUTDOWN, consistent with the xmit paths\nin the same driver.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.175",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45846"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/31e010a106ff6cd8ccac4bfee547fd3fa1015574"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/55193df8d6d33318435f19572bf5ea47a22eee28"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/51eef9c072aa3405a6823a96ae666d38a3b48750"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a0f4e4e8e0f5e24ddd83e3d1221732621cf34636"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/35a115a204be08f97450b0389413e218268ef4a2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/74a02921c48fcd35a7881956c9e5c52b86595f5d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/638905520fc4fae6a80991563f264131545ba3df"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/aa6c6d9ee064aabfede4402fd1283424e649ca19"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-06-15T02:03:26Z"
  }
}